The Zoom GTNitro is the Zoom GT's wheel-like robot, as a "self-deploying combat weapon" and by Dr. K as a "self-operating Megazord". The Engine Cell set in its palm-sized form, enlarges it or transforms into warrior mode. With the Push the Zoom Wheel used for the Zord Attack Vehicles it can transform into human-sized wheel/warrior modes. With its own Zoom Wheel, it transforms into wheel/warrior forms in-scale to the size of the Rangers' PailoMaxNitro formations. RPM Episode 43:Not So Simple.

Zoom Wheel

In its Zoom Wheel (warrior mode), it is highly agile even at Megazord size, capable of evading its opponent's attacks while it engages in close quarters combat using martial arts.

It was originally created by Dr.K, though She and Ashli Orion worked on it further, completing and upgrading it until it was first needed. Dr. K initially disapproved, having earlier reprimanded Flynn for a similar issue, but changed her mind when the Zoom GTNitro did not backfire like She previous device. Thereafter, it was given full operational status.